package com.mmall.common;

import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.map.annotate.JsonSerialize;

import javax.xml.ws.Response;
import java.io.Serializable;

/**
 * @Classname ServerResponse
 * @Description 统一返回数据接口
 * @Date 2020/8/11 20:17
 * @Created by ccc-j
 * @email ccc-ju@outlook.com
 */

/**
 * 保证序列化json的时候，如果是null的对象,key会消失
 * eg: {"status":0,"msg":"SUCCESS!", "data":null}
 * 变成以下  {"status":0,"msg":"SUCCESS!“}
 */
@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
public class ServerResponse<T> implements Serializable {

    private int status;
    private String msg;
    private T data;

    private ServerResponse(int status){
        this.status = status;
    }
    private ServerResponse(int status, T data){
        this.status = status;
        this.data = data;
    }
    private ServerResponse(int status, String msg, T data){
        this.status = status;
        this.msg = msg;
        this.data = data;
    }
    private ServerResponse(int status, String msg){
        this.status = status;
        this.msg = msg;
    }

    //JsonIgnore 使之不在json序列化对象中
    @JsonIgnore
    public boolean isSuccess(){
        return this.status == ResponseCode.SUCCESS.getCode();
    }

    public int getStatus(){
        return status;
    }

    public T getData(){
        return data;
    }
    public String getMsg(){
        return msg;
    }

    public static <T> ServerResponse<T> createBySuccess(){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode());
    }

    public static <T> ServerResponse<T> createBySuccessMessage(String msg){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(), msg);
    }

    public static <T> ServerResponse<T> createBySuccess(T data){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(), data);
    }

    public static <T> ServerResponse<T> createBySuccess(String msg, T data){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(), msg, data);
    }

    public static <T> ServerResponse<T> createByError(){
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(), ResponseCode.ERROR.codeMsg());
    }

    public static <T> ServerResponse<T> createByErrorMessage(String errorMessage){
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(), errorMessage);
    }

    public static <T> ServerResponse<T> createByErrorCodeMessage(int errorCode, String errorMessage){
        return new ServerResponse<T>(errorCode, errorMessage);
    }

}
